SAS port usage

Planning during the product placement phase includes considering the specific use of each SAS port.

SAS port usage in the Storwize V3500

Table 1 lists the supported functions of the individual ports on the Storwize® V3500.

Table 1. SAS port usage
Node type SAS ports (in numerical order)
V3500
  1. Direct-to-host or direct-to-storage system
  2. Direct-to-host or direct-to-storage system
  3. Direct-to-host or direct-to-storage system
  4. Drive enclosures
    Note: Port 4 appears as type "enclosure" as shown by the lsportsas command.

Status Reporting

The lsportsas command displays two attributes for each SAS port:
  • Attachment: what currently is attached to the port (values: none/host/enclosure).
  • Type: what the port can be attached to (values: host/enclosure).